JP2022139467A - Liquid jet device and attachment method of the same - Google Patents

Abstract

To enable a liquid jet device to be attached at low costs to prevent occurrence of abnormal noise.SOLUTION: A liquid jet device according to one embodiment includes: a support tool fixed to an installation surface; and a body which is provided so as to send a compressed fluid. The support tool has: a bottom surface part formed with a first hole part oriented to the installation surface; and an erection part erected from the bottom surface part and formed with second hole parts. The body has: first protruding parts protruding from the side surface facing the erection part; and a second protruding part protruding toward the bottom surface part. Each first protruding part is inserted into the second hole part through a first elastic body, and the second protruding part is inserted into the first hole part through a second elastic body.SELECTED DRAWING: Figure 8

Description

The disclosed embodiments relate to fluid ejection devices and methods of mounting fluid ejection devices.

2. Description of the Related Art Conventionally, there has been known a fluid injection device that removes deposits adhering to a lens of an in-vehicle camera by injecting a fluid such as cleaning liquid or compressed air from a nozzle having an injection port arranged toward the lens (see, for example, Patent Documents 1).

JP 2016-000599 A

However, the above-described prior art still has room for further improvement in terms of enabling inexpensive installation to prevent the occurrence of abnormal noise.

Specifically, a fluid injection device generally drives a fluid pump that compresses a fluid using a motor as a driving source, and vibration is generated when the fluid is driven. Sound may occur.

For this reason, many fluid injection devices conventionally employ a mounting structure that damps vibrations transmitted to the vehicle body by interposing an elastic body such as rubber in an engaging portion with the vehicle body. In addition, when such a structure is adopted, the elastic body may deteriorate due to impact or change over time, and may loosen the engagement with the vehicle body. , often fixed with screws.

However, such a mounting structure tends to increase the number of parts and increase the cost.

SUMMARY OF THE INVENTION It is an aspect of the embodiments to provide a fluid ejection device and a method of attaching the fluid ejection device that can be inexpensively attached to prevent abnormal noise. aim.

A fluid ejection device according to an aspect of an embodiment includes a support that is fixed to an installation surface, and a body that is capable of delivering compressed fluid. The support has a bottom portion formed with a first hole directed toward the installation surface, and a standing portion erected from the bottom portion and formed with a second hole. The body portion has a first protrusion projecting from a side surface of the standing portion and a second protrusion projecting toward the bottom surface portion, and the first protrusion is formed via a first elastic body. It is inserted into the second hole, and the second protrusion is inserted into the first hole via the second elastic body.

According to one aspect of the embodiment, it can be attached at low cost to prevent noise from being generated.

FIG. 1 is an explanatory diagram of a fluid ejection device according to a first comparative example. FIG. 2 is an explanatory diagram of a fluid ejection device according to a second comparative example. FIG. 3 is a schematic cross-sectional view along line AA shown in FIG. FIG. 4 is a schematic explanatory diagram (Part 1) of the method of attaching the fluid ejection device according to the embodiment. FIG. 5 is a schematic explanatory diagram (No. 2) of the method of attaching the fluid ejection device according to the embodiment. FIG. 6 is a perspective view showing a configuration example of a main body according to the embodiment; FIG. 7 is a perspective view showing a configuration example of the bracket according to the embodiment. FIG. 8 is a specific explanatory diagram (Part 1) of the method of attaching the fluid ejection device according to the embodiment. FIG. 9 is a specific explanatory diagram (No. 2) of the method of attaching the fluid ejection device according to the embodiment. FIG. 10 is a diagram showing the arrangement relationship between the first convex portion and the second convex portion. 11 is a schematic cross-sectional view taken along the line BB shown in FIG. 10. FIG. FIG. 12 is a diagram showing a modification in which general-purpose screws are used. FIG. 13 is a diagram showing the height dimension of the second protrusion. FIG. 14 is a diagram showing the dimensions of each part of the anti-vibration rubber in a free state. FIG. 15 is a diagram showing the arrangement relationship between the main body and the bracket.

Hereinafter, embodiments of a fluid ejection device and a method for attaching a fluid ejection device disclosed in the present application will be described in detail with reference to the accompanying drawings. In addition, this invention is not limited by embodiment shown below.

Further, in each drawing shown below, in order to make the explanation easier to understand, a three-dimensional orthogonal coordinate system in which the installation surface of the fluid ejection device is the XY plane and the vertical direction perpendicular to the XY plane is the Z-axis direction is shown. They are shown as appropriate.

Further, hereinafter, the terms "perpendicular" and "parallel" do not mean geometrically strictly perpendicular or parallel, but include substantially perpendicular or substantially parallel with a tolerance.

First, a comparative example of this embodiment will be described. FIG. 1 is an explanatory diagram of a fluid ejection device 10A according to a first comparative example. Also, FIG. 2 is an explanatory diagram of a fluid ejection device 10B according to a second comparative example. 3 is a schematic sectional view taken along the line AA shown in FIG. 2. FIG.

As shown in FIG. 1, a fluid ejection device 10A according to a first comparative example includes a main body portion 11 and a bracket 12. As shown in FIG. The body portion 11 has a bottom portion 11a, a fluid pump 11b, and a delivery portion 11c.

The bottom portion 11a is attached to the bracket 12 via an anti-vibration rubber AR. The fluid pump 11b is driven by a motor (not shown) to compress the fluid. The delivery unit 11c delivers the fluid compressed by the fluid pump 11b toward a nozzle, which is an injection port, through a hose or the like (not shown). The bracket 12 is attached to an installation surface 30 on the vehicle body side formed of sheet metal or the like.

Such a mounting structure with the anti-vibration rubber AR intervening is employed to attenuate the vibration that occurs when the fluid pump 11b is driven and is transmitted to the vehicle body, thereby preventing the occurrence of a large abnormal noise. often

However, the anti-vibration rubber AR deteriorates due to impacts and changes over time, and there is a possibility that the engagement with the vehicle body may become loose. Therefore, for example, in a fluid injection device 10B according to a second comparative example, as shown in FIGS. 2 and 3, a sleeve SL is fitted inside an annular anti-vibration rubber AR, and a screw SW inserted into the sleeve SL is used to It has a mounting structure for fixing the bottom surface portion 11 a (that is, the main body portion 11 ) and the bracket 12 .

However, such a mounting structure tends to increase the number of parts and increase the cost. For example, in the case of the fluid ejection device 10B shown in FIGS. 2 and 3, since it has a three-point support structure in which there are three fixing points with screws SW, at least three anti-vibration rubbers AR and three sleeves SL are used as attachment parts. , 3 screws SW are required. Also, the sleeve SL is often made of, for example, expensive brass. That is, the number of parts increases and the cost increases.

Therefore, the mounting method of the fluid ejection device 10 according to the embodiment includes the bracket 12 fixed to the mounting surface 30, and the body portion 11 provided so as to be capable of delivering the compressed fluid. The main body 11 has a bottom portion formed with a first hole directed toward the surface 30 and a standing portion erected from the bottom portion and formed with a second hole. A method of mounting a fluid ejection device 10 having a projecting first projection and a second projection projecting toward a bottom surface, wherein the first projection is attached to the second hole via the anti-vibration rubber AR. and a step of inserting the second protrusion into the first hole via the anti-vibration rubber AR.

A specific description will be given. FIG. 4 is a schematic explanatory diagram (No. 1) of a method for attaching the fluid ejection device 10 according to the embodiment. 5A and 5B are schematic explanatory diagrams (part 2) of a method for attaching the fluid ejection device 10 according to the embodiment.

As shown in FIGS. 4 and 5, the fluid ejection device 10 according to the embodiment includes a body portion 11 and a bracket 12, similarly to the comparative example. The body portion 11 has a first convex portion 11d that protrudes in the negative direction of the X-axis on a side surface parallel to the YZ plane. In this embodiment, the first protrusions 11d are provided at two locations in parallel along the Y-axis.

Further, the body portion 11 has a second convex portion 11e (not shown) (see FIG. 6 onward) that protrudes in the negative direction of the Z-axis on the bottom surface side parallel to the XY plane. The second convex portion 11e is provided at one location.

The bracket 12 has a bottom portion 12a and an upright portion 12b. The bottom surface portion 12a is provided so as to be parallel to the XY plane. The erected portion 12b is connected to the bottom portion 12a and erected so as to be perpendicular to the bottom portion 12a along the YZ plane.

A hole 12ba (not shown) (see FIG. 7) is provided in the upright portion 12b by pre-processing at a portion that engages with the first convex portion 11d. Anti-vibration rubber AR1 is fitted.

Also, the bracket 12 has a hole portion 12aa (see FIG. 7) which is part of the bottom surface portion 12a connected to the bottom surface portion 12a and engages with the second projection 11e. is provided, and an annular anti-vibration rubber AR2 is fitted in close contact with the inner circumference of the hole 12aa. The sleeve SL is not inserted into the anti-vibration rubbers AR1 and AR2.

In the method of mounting the fluid ejection device 10 according to the embodiment, first, the first convex portion 11d is inserted into the hole portion 12ba via the anti-vibration rubber AR1, thereby fitting the main body portion 11 into the standing portion of the bracket 12. 12b.

Then, in the mounting method of the fluid ejection device 10 according to the embodiment, the body portion 11 is attached to the bottom surface portion of the bracket 12 by inserting and fitting the second convex portion 11e into the hole portion 12aa via the anti-vibration rubber AR2. Attach to the 12a side. After that, the body portion 11 is fixed to the bracket 12 by fixing the second convex portion 11e to the bracket 12 with the screws SW. Although the anti-vibration rubbers AR1 and AR2 are basically the same part, they may be different parts from the standpoint of vibration absorption performance.

As a result, the mounting parts required for the three-point support structure similar to the comparative example are, in this embodiment, anti-vibration rubber AR1 x 2 pieces, anti-vibration rubber AR2 x 1 piece, sleeve SL x 0 piece, screw SW x becomes one. Therefore, according to the mounting method of the fluid ejection device 10 according to the embodiment, it is possible to mount the fluid ejection device 10 at a low cost in order to prevent the generation of abnormal noise. A configuration example of the fluid ejection device 10 according to the embodiment will be described in more detail below.

FIG. 6 is a perspective view showing a configuration example of the body portion 11 according to the embodiment. Moreover, FIG. 7 is a perspective view which shows the structural example of the bracket 12 which concerns on embodiment. 8A and 8B are specific explanatory diagrams (Part 1) of the method of attaching the fluid ejection device 10 according to the embodiment. 9A and 9B are specific explanatory diagrams (Part 2) of the method of attaching the fluid ejection device 10 according to the embodiment.

As already described, more specifically, as shown in FIG. 6, the body portion 11 according to the embodiment has a side surface 11f parallel to the YZ plane, along an axis line ax1 parallel to the X axis, in the negative direction of the X axis. It has two first protrusions 11d that protrude toward. The first convex portion 11d is formed in a cylindrical shape. Note that the first convex portion 11d is not necessarily limited to a cylindrical shape.

Further, the main body portion 11 has one second convex portion 11e protruding in the negative direction of the Z-axis along an axis line ax2 parallel to the Z-axis on the bottom surface side parallel to the XY plane. The second convex portion 11e is formed in a cylindrical shape having a through hole 11ea. In addition, the second convex portion 11e is not necessarily limited to a cylindrical shape.

Further, as already described, as more specifically shown in FIG. 7, the bracket 12 has a bottom portion 12a and a standing portion 12b. The bottom surface portion 12a is provided so as to be parallel to the XY plane. The erected portion 12b is connected to the bottom portion 12a and erected so as to be perpendicular to the bottom portion 12a along the YZ plane.

The upright portion 12b is provided with a hole portion 12ba by pre-processing at a portion coaxial with the above-described axis line ax1 when the main body portion 11 is attached. AR1 is fitted.

Also, the bracket 12 has a hole portion 12aa which is part of the bottom surface portion 12a which is connected to the bottom surface portion 12a and which is coaxial with the above-described axis line ax2 when the main body portion 11 is attached. A vibration-proof rubber AR2 is fitted in close contact with the inner circumference of the hole 12aa.

Then, as shown in FIG. 8, when the body portion 11 is attached to the bracket 12, the first convex portion 11d is first inserted and fitted into the aforementioned hole portion 12ba via the anti-vibration rubber AR1 (see FIG. 8). See arrow aw1 in the middle). At this time, the outer diameter dimension of the first projection 11d is equal to the inner diameter dimension of the anti-vibration rubber AR1 so that the first projection 11d is tightly fitted to the anti-vibration rubber AR1. formed to be larger than

After the first convex portion 11d is inserted into the hole portion 12ba via the vibration-isolating rubber AR1, the second convex portion 11e is formed with the fitting position between the first convex portion 11d and the vibration-isolating rubber AR1 as a fulcrum. It is inserted and fitted into the aforementioned hole 12aa via the anti-vibration rubber AR2 (see arrow aw2 in the drawing). At this time, the second convex portion 11e is formed so that the outer diameter thereof is larger than the inner diameter of the anti-vibration rubber AR2 so that the second convex portion 11e is closely fitted to the anti-vibration rubber AR2. It is

Then, as shown in FIG. 9, the main body 11 is fixed to the bracket 12 by screwing a screw SW into the through hole 11ea (see arrow aw3 in the figure).

Here, a specific description will be given of the relationship of each member related to the mounting structure. FIG. 10 is a diagram showing the arrangement relationship between the first convex portion 11d and the second convex portion 11e. 11 is a schematic cross-sectional view taken along line BB shown in FIG.

Moreover, FIG. 12 is a figure which shows the modification in the case of using general-purpose screw SW2. Also, FIG. 13 is a diagram showing the height dimension of the second convex portion 11e. Also, FIG. 14 is a diagram showing the dimensions of each part of the anti-vibration rubbers AR1 and AR2 in a free state. Note that the free state refers to a state in which the rubber vibration insulators AR1 and AR2, which are elastic bodies, are not deformed by external force. FIG. 15 is a diagram showing the arrangement relationship between the body portion 11 and the bracket 12. As shown in FIG.

As shown in FIG. 10, in the case of this embodiment, which has a three-point support structure, the through hole 11ea of the second convex portion 11e and the hole portion 12aa coaxial therewith connect the two hole portions 12ba of the standing portion 12b. It is provided at the vertex position of an isosceles triangle whose base is a straight line. It is recommended that such vertex positions be arranged so that the center of gravity of the fluid ejection device 10 is at the same position as the center of gravity of the isosceles triangle. This is because even if an isosceles triangle is formed, if the center of gravity of the fluid ejection device 10 is not within the triangle, the vibration effect is reduced. If the arrangement is difficult, the through hole 11ea and the hole 12aa are arranged so that the center of gravity of the triangle is as close to the center of gravity of the fluid ejection device 10 as possible.

As a result, when the main body 11 is fixed to the bracket 12, the force applied from the main body 11 to the two anti-vibration rubbers AR1 is made uniform, and the stable attachment strength of the main body 11 to the bracket 12 is ensured. becomes possible.

Three or more holes 12ba and corresponding first projections 11d may be provided in the parallel direction. In that case, the through holes 11ea and the hole portions 12aa are provided at the vertex positions of an isosceles triangle whose base is a straight line connecting the hole portions 12ba at both ends.

Moreover, the number of the hole 12ba and the corresponding first protrusion 11d may be one. In this case, the hole portion 12ba has a shape in which, for example, two hole portions 12ba shown in FIG. It has a shape in which one convex portion 11d is connected to one along the Y-axis. Also, one vibration isolator AR1 is provided in close contact with the inner periphery of the hole 12ba.

A plurality of holes 12aa and through holes 11ea coaxial therewith (that is, second projections 11e) may also be provided in parallel.

Further, as shown in FIG. 11, the screw for fixing the second projection 11e to the bracket 12 is a special screw SW1 having a head integrally formed with a screw head and a washer.

In this case, the outer diameter dimension b of the head of the special screw SW1 is at least larger than the inner diameter dimension a of the anti-vibration rubber AR2, and when the second convex portion 11e is fixed to the bracket 12 by the special screw SW1, the special It is necessary that the head of the screw SW1 completely presses down the end of the anti-vibration rubber AR2.

Of course, as shown in FIG. 12, the screw for fixing the second projection 11e to the bracket 12 is not the special screw SW1, but a general-purpose screw SW2 having a separate screw head and washer W. may

In such a case, the washer W has an outer diameter dimension corresponding to the aforementioned outer diameter dimension b, and when the second convex portion 11e is fixed to the bracket 12 by the general-purpose screw SW2, the washer W is completely attached to the vibration-isolating rubber. A washer sized to hold down the end of AR2 may be set.

That is, as shown in FIGS. 11 and 12, the outer diameter dimension of the washer W (including the portion corresponding to the washer of the special screw SW1) is preferably larger than the width dimension of the end portion of the anti-vibration rubber AR2.

Further, as shown in FIG. 13, the second convex portion 11e is formed such that its height dimension c is smaller than the height dimension d of the anti-vibration rubber AR2 shown in FIG. As a result, when the second convex portion 11e is fixed to the bracket 12, the anti-vibration rubber AR2 can be press-fitted between the special screw SW1 or the general-purpose screw SW2 and the main body portion 11. It can contribute to enhancing the vibration effect.

The same applies to the anti-vibration rubber AR1. As shown in FIG. 14, the anti-vibration rubbers AR1 and AR2 have a structure in which an annular portion rm2 having a smaller outer diameter than the annular portion rm1 is interposed between two annular portions rm1 having a thickness e. . The bracket 12 is engaged with the annular portion rm2.

As shown in FIG. 15, when the body portion 11 is fixed to the bracket 12, the axis line ax2 into which the screw SW is screwed is such that the gap dimension f between the side surface 11f and the standing portion 12b is the above-described annular shape. It is set to be smaller than the thickness dimension e of the portion rm1. Similarly, when the main body portion 11 is fixed to the bracket 12, the clearance dimension between the bottom face portion 11a of the main body portion 11 and the bottom face portion 12a of the bracket 12 is made smaller than the thickness dimension e of the annular portion rm1. is set to

As a result, when the screw SW is screwed in and the body portion 11 is fixed to the bracket 12, vibration isolation is provided between the side surface 11f and the standing portion 12b and between the bottom portion 11a side of the body portion 11 and the bracket 12. The rubbers AR1 and AR2 can be pressure-bonded, which contributes to enhancing the anti-vibration effect of the anti-vibration rubbers AR1 and AR2.

As described above, the fluid ejection device 10 according to the embodiment includes the bracket 12 (corresponding to an example of a "support") fixed to the installation surface 30, and the main body provided so as to be able to deliver the compressed fluid. a part 11; The bracket 12 includes a bottom surface portion 12a formed with a hole portion 12aa (an example of a “first hole portion”) facing the installation surface 30, and a hole portion 12ba (a “second hole portion”) extending from the bottom surface portion 12a. (corresponding to an example of "part") is formed. The body portion 11 has a first protrusion 11d protruding from a side surface 11f with respect to the standing portion 12b, and a second protrusion 11e protruding toward the bottom surface portion 12a. (equivalent to an example of a "first elastic body"), and the second protrusion 11e is inserted into the hole 12aa via an anti-vibration rubber AR2 (equivalent to an example of a "second elastic body"). inserted into.

Therefore, according to the fluid ejection device 10 according to the embodiment, it is possible to inexpensively attach the device in order to prevent the occurrence of abnormal noise.

Further, the second convex portion 11e is fixed to the bracket 12 using a fixing member.

Therefore, according to the fluid ejecting device 10 according to the embodiment, since it is sufficient to use the fixing member only for the second convex portion 11e, the number of parts can be reduced, and it can be attached at low cost to prevent the occurrence of abnormal noise. can.

Further, the fixing member is a screw SW in which a screw head and a washer are integrally formed or a screw head and a washer are separate bodies.

Therefore, according to the fluid ejection device 10 according to the embodiment, it is possible to easily attach the device to prevent noise from being generated.

Moreover, the outer diameter dimension of the head of the screw SW is larger than the width dimension of the end of the anti-vibration rubber AR2.

Therefore, according to the fluid injection device 10 according to the embodiment, when the body portion 11 is fixed to the bracket 12, the head portion of the screw SW can completely hold down the end portion of the anti-vibration rubber AR2. be able to.

Moreover, the height dimension c of the second convex portion 11e is smaller than the height dimension d of the anti-vibration rubber AR2.

Therefore, according to the fluid ejection device 10 according to the embodiment, when the body portion 11 is fixed to the bracket 12, the anti-vibration rubber AR2 can be press-fitted between the screw SW and the body portion 11, and the anti-vibration It can contribute to enhancing the anti-vibration effect of the rubber AR2.

A plurality of holes 12ba and a plurality of first projections 11d are provided in the parallel direction.

Therefore, according to the fluid ejection device 10 according to the embodiment, it is possible to increase the fixing force by increasing the number of the holes 12ba and the first protrusions 11d, and at the same time, it is possible to mount the device at low cost by eliminating the need to increase the number of fixing members. can be done.

Moreover, the hole 12aa is provided at the vertex position of an isosceles triangle whose base is a straight line connecting the holes 12ba at both ends.

Therefore, according to the fluid ejection device 10 according to the embodiment, when the main body 11 is fixed to the bracket 12, the force applied from the main body 11 to the anti-vibration rubber AR1 is made uniform, and the force of the main body 11 relative to the bracket 12 is uniform. It is possible to ensure stable attachment strength.

A plurality of holes 12aa and a plurality of second projections 11e are provided in the parallel direction.

Therefore, according to the fluid ejection device 10 according to the embodiment, the fixing force can be increased by increasing the number of the holes 12aa and the second protrusions 11e.

Further, the axis line ax2 of the hole portion 12aa is such that when the main body portion 11 is fixed to the bracket 12, the gap dimension f between the side surface 11f and the standing portion 12b is equal to or greater than the annular portion rm1 of the anti-vibration rubber AR1 in the free state. is set to be smaller than the thickness dimension e of .

Therefore, according to the fluid injection device 10 according to the embodiment, when the main body portion 11 is fixed to the bracket 12, the anti-vibration rubber AR1 can be crimped between the side surface 11f and the standing portion 12b. It can contribute to enhancing the anti-vibration effect of the vibration rubber AR1.

In addition, in the above-described embodiment, an example is given in which the screw SW is a fixing member for fixing the body portion 11 to the bracket 12, but the type of the fixing member is not limited. Thus, the fixing member may be, for example, a nail-like or rivet-like member. The securing member may also be a member that is tied, pinched or glued, for example.

Also, the fluid injection device 10 may be provided not only in a vehicle, but also in a ship, an aircraft, or the like. Moreover, it may be provided as a fluid ejecting device not only for such a moving machine but also for a machine that is installed and operated at a fixed location.

Further effects and modifications can be easily derived by those skilled in the art. Therefore, the broader aspects of the invention are not limited to the specific details and representative embodiments so shown and described. Accordingly, various changes may be made without departing from the spirit or scope of the general inventive concept defined by the appended claims and equivalents thereof.

REFERENCE SIGNS LIST 10 fluid injection device 11 main body 11a bottom surface 11b fluid pump 11c delivery unit 11d first projection 11e second projection 11ea through hole 11f side surface 12 bracket 12a bottom surface 12aa hole 12b standing portion 12ba hole 30 installation surface AR , AR1, AR2 Anti-vibration rubber SW Screw SW1 Special screw SW2 General-purpose screw W Washer ax1, ax2 Axis rm1, rm2 Annular part

Claims (10)

A support that is fixed to an installation surface, and a main body that is capable of delivering compressed fluid,
The support is
a bottom portion formed with a first hole directed toward the installation surface, and a standing portion erected from the bottom portion and formed with a second hole;
The main body is
It has a first protrusion projecting from a side surface of the standing portion and a second protrusion projecting toward the bottom surface, and the first protrusion is connected to the second hole via a first elastic body. and the second protrusion is inserted into the first hole via a second elastic body. The fluid ejection device according to claim 1, wherein the second protrusion is fixed to the support using a fixing member. 3. The fluid ejection device according to claim 2, wherein the fixing member has a screw head and a washer integrally formed, or a screw having a separate screw head and the washer. 4. The fluid ejection device according to claim 3, wherein the outer diameter dimension of the head of the screw is larger than the width dimension of the end of the second elastic body. The fluid ejection device according to any one of claims 1 to 4, wherein the height dimension of the second protrusion is smaller than the height dimension of the second elastic body. The fluid ejection device according to any one of claims 1 to 5, wherein a plurality of the second holes and the first projections are provided in parallel. 7. The fluid ejection device according to claim 6, wherein the first hole is provided at a vertex position of an isosceles triangle whose base is a straight line connecting the second holes at both ends. 6. The fluid ejection device according to claim 1, wherein a plurality of said first holes and said second projections are provided in parallel. The axis of the first hole is such that when the main body is fixed to the support, the dimension of the gap between the side surface and the standing portion is greater than the thickness dimension of the first elastic body in the free state. 9. The fluid ejection device according to any one of claims 1 to 8, characterized in that it is set so as to be small. a support that is fixed to an installation surface; and a body that is capable of delivering compressed fluid, the support having a bottom surface portion formed with a first hole directed toward the installation surface; and a standing portion erected from the bottom portion and having a second hole formed therein, the main body portion including a first convex portion protruding from a side surface of the standing portion and directed toward the bottom portion A method of mounting a fluid ejection device having a second projection projecting from the
a step of inserting the first projection into the second hole via a first elastic body;
and inserting the second protrusion into the first hole via a second elastic body.

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